Fiberglass tanks can be used to help mitigate water pollution and flooding

Xerxes fiberglass stormwater tanks can be part of the solution in controlling, managing and treating stormwater. More than 10 trillion gallons of untreated stormwater enter U.S. waterways every year. That translates into pollutants such as oil, grease, raw sewage and pesticides flowing or seeping into our rivers, streams, lakes and oceans. 

It’s never been more important for communities to have responsible systems in place. When our tanks are part of a total stormwater management system, they can help reduce contamination, flooding and erosion. Space saving and safer than open aboveground ponds, our underground tanks can be used for stormwater retention and detention as well as management of combined sewer overflow (CSO) and sanitary sewer overflow (SSO). Our tank’s corrosion-resistant properties result in long-term solutions. 

Xerxes tanks meet – or exceed – industry standards


Tanks can be manufactured to comply with the IAPMO/ANSI Z1002 standard, which covers stormwater tanks and specifies requirements for design, materials, manufacture, performance, testing, and markings. 

Why choose a Xerxes stormwater tank?

  • Designed to be 100% watertight 
  • Single-tank capacities from 600 to 60,000 gallons  
  • Multiple-tank installations with unlimited capacity  
  • Designed to withstand H-25 / HS-25 axle loads 
  • Underground installation optimizes land use